Local Chapters of ATOS are the organizations that really do all the work of preserving and presenting Theatre Organ to the public. Please lookup the Chapters in your area and get involved!

Chapter State/Prov. City
Alabama Alabama Birmingham
Atlanta Georgia Atlanta
Australia Felix Australia-Wide
Binghamton Theatre Organ Society, Inc. New York Binghamton
Bluegrass Kentucky Lexington
Cedar Rapids Iowa Cedar Rapids
Central Florida Florida
Central Indiana Indiana Indianapolis
Chicago Area Illinois Chicago
Chicagoland Illinois Chicago
Cinema Organ Society (affiliate) United Kingdom
Columbia River Washington Vancouver
Connecticut Valley Connecticut
Cumberland Valley Pennsylvania Chambersburg
Dairyland Wisconsin Milwaukee
Delaware Valley Pennsylvania
Detroit Theatre Organ Society (affiliate) Michigan Detroit
Dickinson Theatre Organ Society Delaware Wilmington
EASTERN MASSACHUSETTES Massachusetts
Free State Maryland Catonsville
Garden State New Jersey Jersey City
Great Lakes Bay Michigan Saginaw
GREAT SALT LAKE Utah Salt Lake City
Houston Texas Houston
Hudson Mohawk New York Schenectady
JESSE CRAWFORD Montana Billings
Joliet Area Illinois Joliet
Kansas City Missouri Kansas City
Kingston Canada Kingston
LA CROSSE SCENIC BLUFFS Wisconsin
Land O' Lakes Minnesota Minneapolis / St. Paul
Lansing Theatre Organ, Inc. (affiliate) Michigan Lansing
London and South of London England, General London
Los Angeles California Los Angeles
MAGNOLIA Mississippi
Manasota Florida Sarasota
Motor City Michigan Detroit
New York New York New York City
NorCal California San Francisco
North Texas Texas Dallas / Ft. Worth
NORTHERN MICHIGAN Michigan Traverse City
Ohio Valley Ohio Cincinnati
Old Dominion Virginia Richmond
Orange County California Fullerton
Packerland Wisconsin
Piedmont North Carolina Burlington
Pikes Peak Colorado Colorado Springs
Pine Tree Maine Old Orchard Beach
Pittsburgh Area Theatre Organ Society (Affiliate) Pennsylvania Pittsburgh
Puget Sound Washington Seattle
Red River Theatre Organ Society North Dakota Fargo
River City Nebraska Omaha
Rochester Theatre Organ Society (affiliate) New York Rochester
Rocky Mountain Colorado Denver
Saint Louis Missouri St. Loius
San Diego California San Diego
Santa Barbara California Santa Barbara
Sierra California Sacramento
Sooner State Oklahoma Tulsa
South Florida Florida
Spokane First Nazarene Washington Spokane
Susquehanna Valley Pennsylvania York
Valley of the Sun Arizona Phoenix
Western Reserve Ohio Cleveland